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Overhead Cranes · Underslung Variant

Double Girder Underslung Crane

A heavy-duty underslung crane on two girders — higher capacity and longer spans while keeping the roof-suspended headroom advantage. Capacities to ~25 tonnes, designed to IS 3177 & IS 807.

Capacity up to ~25 tRoof-suspendedHigher liftLonger spansIS 3177 / 807

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Double Girder Underslung Crane — in-house manufactured at Surat

~25 tMax SWL

LowHeadroom

Mod–longSpan

M5–M7Duty class

415 V3-ph supply

125%Load test

Overview

Double Girder Underslung Crane.

The Double Girder Underslung Crane keeps the headroom-saving, runway-sharing benefits of underslung running while adding the capacity and span of two girders. The crab runs between the girders for higher hook height within the underslung layout.

It handles medium-to-heavy duty up to ~25 tonnes over longer spans, designed to IS 3177 / IS 807 — for plants that need heavier roof-suspended handling.

Technical parameters

Capacity, span & speeds.

Double girder underslung crane — 1 to 10 Ton, low-headroom design with selectable span. Final build confirmed on the project datasheet.

Capacity (SWL)	MT	1	2	3	5	7.5	10
Model	DGUS	DGUS 0102	DGUS 0204	DGUS 0304	DGUS 0504	DGUS 7.504	DGUS 1004
Maximum Span	m	25	25	20	20	15	15
Maximum Lift	m	30	30	30	25	25	25
Max. Hoist Speed	m/min	10	8	8	8	8	5
Max. Cross-Travel Speed	m/min	20	20	20	20	20	20
Max. Long-Travel Speed	m/min	25	25	25	25	20	20
Test Load	MT	1.25	2.5	3.75	6.25	9.38	12.5

Model codes shown (DGUS). Available manual, semi-electric or fully electric. Designed to IS 807 / IS 3177; crab machinery to IS 3938.

Technical specifications

Specification sheet.

Standard ranges — send your requirement and we’ll configure to match.

Crane type

Double Girder Underslung (bottom-flange running)

Safe Working Load

Up to ~25 t

Span

Moderate to long

Lift height

Higher than single girder (headroom-optimised)

Suspension

Hung from runway bottom flange

Runway sharing

Yes

Duty / class

M5 – M7

Control

Pendant, 110 V (radio optional)

Power supply

415 V, 3-phase, 50 Hz

Operating environment

Indoor (outdoor on request)

Mechanical & electrical

Bridge / girder

Welded box girder, IS:2062 (E250) structural steel

End carriages

Fabricated box section with forged double-flanged wheels

Travel wheels

Forged steel, heat-treated, on anti-friction bearings

Hoisting motor

TEFC squirrel-cage, Class F insulation, IP55, crane-duty

Travel motors

TEFC, Class F, with integral electromagnetic brakes

Brakes

Electromagnetic, spring-applied fail-safe (engage on power loss)

Gearbox

Helical hob-cut gears, 250–350 BHN, carbon alloy steel

Wire rope

IS:2266, minimum factor of safety 6

Hook

Forged, with safety latch

Control panel

Modular, with overload relay & single-phasing preventer

Painting

Primer + synthetic enamel (epoxy / PU optional)

Class	Duty	Typical use
M5	Medium duty	Machine shops and general indoor / outdoor industrial use.
M7	Heavy duty	Steel mills, fabrication shops, paper mills, scrap yards, induction furnaces (magnet / bucket).
M8	Extra-heavy duty	Steel mills and heavy engineering; hot-metal applications on request.

Standard features

What comes built in as standard.

Welded box-girder bridge to IS:2062

Forged, heat-treated double-flanged wheels

TEFC crane-duty motors, Class F, IP55

Spring-applied fail-safe EM brakes (hoist & travels)

Helical hob-cut gearboxes (250–350 BHN)

Hoist upper & lower limit switches

Travel end limit switches, buffers & end stops

Overload protection / load limiter

110 V pendant push-button control

Single-phasing preventer & overload relay

Wire rope to IS:2266 (FoS 6); forged hook with latch

125% SWL load test + test certificate

Configure your unit

Optional upgrades & add-ons.

Radio remote control

VFD stepless drives with anti-sway

Soft starters

Anti-collision, zone-limiting & no-fly zones

Flame-proof / spark-proof (Ex) build

Outdoor weatherproofing — canopy, IP65, anti-corrosion paint

Shrouded DSL or festoon power feed

100% radiography of butt welds

Special hooks, C-hooks, magnets or grabs

Warning hooter, flasher & beacon

Operator cabin with walkway

Load display, overload cut-out & hour-meter

Advantages

Why a LOADMATE underslung double.

Higher capacity, still roof-hung

Two girders carry heavier loads while keeping the headroom and runway-sharing benefits.

Greater hook height

The crab runs between the girders for more lift than a single-girder underslung.

Longer spans

Suited to wider bays needing heavier handling.

Shared runways

Adjacent bays can still share the suspended runway columns.

Flexible heavy handling

Cross-bay transfer of heavier loads in low-headroom buildings.

Built & tested in-house

Designed to IS 3177 / 807, load-tested at 125% of SWL.

Configurations

Two ways to specify it.

Standard double-girder underslung

Two girders with a crab for higher capacity in a roof-suspended layout.

Best for: Heavier production and process bays.

Long-span / heavy-duty

Reinforced for wider spans and higher duty cycles within the underslung format.

Best for: Wide bays and higher-frequency handling.

Applications

Industries we serve.

Tap any industry for application detail.

Steel & MetalsView industry Engineering & FabricationView industry AutomotiveView industry Cement & ProcessView industry Power & EnergyView industry Warehousing & LogisticsView industry

Standards & compliance

Designed and certified to published standards.

IS 3177

Code of practice for EOT cranes

Design, construction, testing & operation of EOT cranes up to 50 t.

IS 807

Structural design of cranes

Design, manufacture, erection & testing of crane structures.

IS 4137

Heavy-duty EOT cranes

Heavy-duty M7 / M8 applications reference this standard.

ISO 9001 + ZED

Quality & manufacturing

ISO 9001:2015 certified plus Government of India ZED Gold tier.

FAQs

Underslung Double — technical questions.

How is this different from the single-girder underslung?

Two girders give higher capacity (up to ~25 t), longer spans and greater hook height, while keeping the headroom-saving, roof-suspended running.

What capacity can you supply?

Medium-to-heavy duty up to about 25 tonnes. For more, a top-running double-girder EOT crane is recommended.

Does it still save headroom?

Yes — it runs on the runway bottom flange, so the headroom and runway-sharing benefits of underslung running are retained.

Which standards apply?

IS 3177 and IS 807, with ISO 9001:2015 and ZED Gold certification, and a 125% load test.

Can adjacent bays share the runway?

Yes — the suspended runway can be shared across bays for cross-bay transfer.

Indoor or outdoor?

Primarily indoor; outdoor execution with weatherproofing on request.

Need a Underslung Double quote?

Send your requirement and our application engineers respond within 24 hours with a configuration, spec sheet and quote.